EP-703 Wind Tunnel Setup Procedure (ANSYS Fluent)

Wikis > EP-703 Wind Tunnel Setup Procedure (ANSYS Fluent)

Date: June 4, 2015


  • To set a standard procedure for wind tunnel simulation in ANSYS Fluent
  • The procedure follows the wind tunnel simulation that was run for the NX Drone
  • Useful resources:
  • If you have no experience with ANSYS, it is recommended that you go through the ETP for Learning ANSYS.



Getting Started

  • If starting with a new project with a mesh, (if without mesh, refer to the DM and Meshing procedure)
    • Drag and drop a Fluid Flow (Fluent) system under Analysis Systems into the white space in Workbench.
    • Import the mesh by right clicking on the Mesh cell > Import Mesh File… > Browse703-01
    • DCLK (double click) on the Setup cell, check Double Precision, and click OK in the following window to open Fluent.
  • If starting from completion of the related DM and Meshing procedures, then simply DCLK on the Setup cell.



  • General
    • Click on Report Quality (Confirm that the values that appear are not close to the extremes that Fluent describes. Minimum orthogonal quality should be above .05)
    • Click on Check
  • Models
    • DCLK (double click) on Viscous
      • Model = k-omega (2 eqn)
      • k-omega Model = SST
      • Check Low Re Correction
    • Materials
      • DCLK on air under Fluid
        • Density (kg/m3) = 1.1845 (This is for 25 C; use appropriate value found for certain temperature. Also, we can assume constant density because of the relatively low air velocity.)
        • Viscosity (kg/m-s) = 1.8444e-05 (this is for 25 C; use appropriate value found for certain temperature.)
        • Click Change/Create
      • Cell Zone Conditions
        • Click on the cell zone (there should only be one).
        • Confirm that Type is set to fluid.
      • Boundary Conditions (if names used are not the same, look for corresponding names)
        • DCLK on inlet
Momentum Velocity Specification Method Magnitude, Normal to Boundary
Velocity Magnitude (m/s) 13.4112

This is equivalent to 30 mph. Use appropriate velocity depending on the case.

  • DCLK on outlet
Momentum Gauge Pressure (pascal) 0
  • DCLK on all walls to confirm they are Stationary, No-Slip Walls with 0 Thermal properties.
  • Reference Values
Compute from outlet
Reference Values Density (kg/m3) 1.1839

This is for 25 C. Use case-specific values.

Temperature (k) 298

This is for 25 C. Use case-specific values.